private static bool TryGetArcBoundingBox(DxfLwPolylineVertex v1, DxfLwPolylineVertex v2, out DxfBoundingBox bbox)
{
if (!DxfArc.TryCreateFromVertices(v1, v2, out var arc))
{
bbox = default(DxfBoundingBox);
return(false);
}
var boundingBox = arc.GetBoundingBox();
if (!boundingBox.HasValue)
{
bbox = default(DxfBoundingBox);
return(false);
}
bbox = boundingBox.Value;
return(true);
}
private IEnumerable <DxfPoint> ProcessVertexPair(DxfLwPolylineVertex vertex1, DxfLwPolylineVertex vertex2)
{
if (Math.Abs(vertex1.Bulge) <= 1e-10)
{
yield return(new DxfPoint(vertex1.X, vertex1.Y, 0));
}
else
{
// the segment between `vertex.Location` and `next.Location` is an arc
if (TryGetArcBoundingBox(vertex1, vertex2, out var bbox))
{
yield return(bbox.MinimumPoint);
yield return(bbox.MaximumPoint);
}
else
{
// fallback if points are too close / bulge is tiny
yield return(new DxfPoint(vertex1.X, vertex1.Y, 0));
}
}
}
public static bool TryCreateFromVertices(DxfLwPolylineVertex v1, DxfLwPolylineVertex v2, out DxfArc arc)
{
return(TryCreateFromVertices(v1.X, v1.Y, v1.Bulge, v2.X, v2.Y, out arc));
}